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Результаты поиска термина [seismograph]
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seismograph | - An instrument that records seismic waves; that is, vibrations of the earth. used to record and measure earthquakes.
- Drill. a rotary drill, pump, and hinged mast mounted as an integral drilling unit on a truck body and used primarily to drill vertical shallow holes in which explosives are placed and detonated to produce shock waves from the rock strata, which then are measured by seismic recording instruments. also called jackknife rig, rotary-shot drill, seismic drill, shothole drill.
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seismograph drill |
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seismograph rod | A collared, tapered, v-thread-coupling drill rod used on seismograph drills. | |
seismography |
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